Fast Living 3D Printing via Free Radical Promoted Cationic RAFT Polymerization

Bowen Zhao; Jiajia Li; Guangliang Li; Xinrui Yang; Shaopu Lu; Xiangqiang Pan; Jian Zhu

doi:10.1002/smll.202207637

Fast Living 3D Printing via Free Radical Promoted Cationic RAFT Polymerization

Small. 2023 Dec;19(50):e2207637. doi: 10.1002/smll.202207637. Epub 2023 Jan 27.

Authors

Bowen Zhao¹, Jiajia Li¹, Guangliang Li¹, Xinrui Yang¹, Shaopu Lu¹, Xiangqiang Pan¹, Jian Zhu¹

Affiliation

¹ State Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou key Laboratory of Macromolecular Design and Precision Synthesis, Department of Polymer Science and Engineering, College of Chemistry Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China.

PMID: 36707417
DOI: 10.1002/smll.202207637

Abstract

The application of reversible deactivation radical polymerization techniques in 3D printing is emerging as a powerful method to build "living" polymer networks, which can be easily postmodified with various functionalities. However, the building speed of these systems is still limited compared to commercial systems. Herein, a digital light processing (DLP)-based 3D printing system via photoinduced free radical-promoted cationic reversible addition-fragmentation chain transfer polymerization of vinyl ethers, which can build "living" objects by a commercial DLP 3D printer at a relatively fast building speed (12.99 cm h^-1 ), is reported. The polymerization behavior and printing conditions are studied in detail. The livingness of the printed objects is demonstrated by spatially controlled postmodification with a fluorescent monomer.

Keywords: 3D printing; cationic reversible addition fragmentation chain transfer (RAFT) polymerization; photo polymerization; postfunctionalization.

Abstract

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